Table of Contents
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EN 215-1
HD 1215-2
Application
System
Approved to EN 215
DKCD
Radiator Thermostats type RA 2000
Valve bodies type RA-FN and RA-G
RA 2910 built-in sensor
RA-FN straight valve body
RA-G straight valve body
Robustly built and designed to meet the rigours of
the commercial and industrial sectors, a
comprehensive range of RA2000 radiator
thermostats is available for practically all systems
and installation conditions. Sensors and valve
bodies are packed separately so that they can be
mixed and matched for any duty.
Valve bodies are of nickel-plated brass. The
different types are shown below:
RA-FN For steel pipe. Straight, Vertical angled
from 3/8" to 1" BSP and horizontal angled from 3/8"
to ¾" BSP.
RA-G Straight and Vertical Angled for one-pipe
pumped or gravity systems, ½", ¾" and 1" BSP.
RA-N Valves with integral presetting facility. See
separate Data Sheet.
In all valves, the pressure pin of the gland seal is
made of chromium steel and this works in a
lifetime-lubricated O Ring seal. The complete gland
assembly can be replaced without draining down
the system.
All Danfoss RA2000 radiator thermostats are
manufactured to highest standards, and are
VD.51.Q1.12 © Danfoss 10/2003
RA 2920 tamperproof
sensor
RA-FN vertical angle valve body
RA-G vertical angle valve body
The protective cap supplied with each new valve
may be used for manual control during installation
only. It should not be used as isolation device. A
manual shut off device is available as a spare part.
Sensors are available as both standard and
tamperproof, built-in and remote sensing models, as
well as remote adjusting. All have range limiting and
locking. They are for use with Danfoss valve bodies
types RA-FN and RA-G.
RA 2000 sensors are not suitable for use with
RA-FR valves.
RA2000 Features
´ Robust Construction
´ Accurate Temperature Control
´ Full Range
´ Range Limiting and Locking
´ Tamper Resistant Models
´ Remote Sensors
´ Remote Wall Adjuster
´ Low Temperature Models
´ Presetting Valves
approved to the European standard EN 215 and di-
mension standard HD 1215-2, which supersedes BS
6284.
RA 5062 remote
temperature adjuster
RA-FN horizontal angle valve body
1
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Table of Contents
Related Manuals for Danfoss RA 2000
Summary of Contents for Danfoss RA 2000
- Page 1 They are for use with Danfoss valve bodies different types are shown below: types RA-FN and RA-G. RA 2000 sensors are not suitable for use with RA-FN For steel pipe. Straight, Vertical angled RA-FR valves. from 3/8” to 1” BSP and horizontal angled from 3/8”...
- Page 2 Data Sheet Radiator thermostats for one-pipe and two-pipe systems RA2000 thermostatic sensors (4) supplied in separate boxes Selection and specification Temp. range Type Code no. Sensor (Max. sensor temperature 60°C) Xp = 2K RA 2910 013G2910 Built-in 5 - 26 °C (1) Should water treatment be RA 2920 013G2920...
- Page 3 Data Sheet Radiator thermostats for one-pipe and two-pipe systems Accessories for RA 2000 sensors Code no. Accessories Anti.theft plugs for sensors (50 pcs) 013G1232 Threaded range limiting pins (30 pcs) 013G1237 RA 2020/2022 scale cover (20 pcs) 013G1233 Toolkit, comprising allen key & locking pin tool...
- Page 4 Data Sheet Radiator thermostats for one-pipe and two-pipe systems Setting the temperature Radiator thermostats are sophisticated proportional control. 1) The operating principles of thermostats The function of the actuator unit is to sense the am- bient temperature, compare it with the required tem- perature, and correct the valve setting in accord- ance with the difference, as illustrated in fig.
- Page 5 Data Sheet Radiator thermostats for one-pipe and two-pipe systems The RA2000 thermostatic sensor consisting of a bel- Sensor operating principle lows system and saturated vapour charge provides proportional control, as opposed to On/Off. The sen- sor is actuated by ambient temperature changes. The calibrated pressure in the bellows corresponds to the temperature of the charge.
- Page 6 To ensure quiet operation, maximum pressure drop should RA-G not exceed 40 to 45kPa. for one-pipe systems Capacity with P-band between 0.5K and 2K with RA 2000 sensor Example The P-band value depends on the chosen valve i.e. Heat requirement: 2.05 kW RA-FN 15 will work with a P-band of 2K.
- Page 7 The temperature adjuster should be mounted 1.5m above the floor. IMPORTANT Do not use RA 2000 sensors with RA-FR reversible valve bodies. Changing the gland seal Should the valve body gland seal shows signs of...
- Page 8 Data Sheet Radiator thermostats for one-pipe and two-pipe systems Dimensions Built-in sensor Built-in sensor Built-in tamperproof sensor on RA-FN body, horizontal angle (UK) on RA-FN or RA-G body on RA-FN or RA-G body Remote sensor on RA-FN or RA-G body Remote temperature adjuster Arc.flats Connection (ISO 7-1)
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